/* howmuchbtc - Main Styles */
:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-main: #ffffff;
    --text-sub: #a0a0a0;
    --btc-orange: #F7931A;
    --btc-orange-alpha: rgba(247, 147, 26, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
    background-color: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 1.2rem;
    color: var(--text-sub);
    font-weight: 400;
    margin-bottom: 10px;
}

.highlight {
    color: var(--btc-orange);
    font-weight: 700;
}

.display-area {
    text-align: center;
    margin-bottom: 40px;
}

.btc-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--btc-orange);
    line-height: 1.2;
    word-break: break-all;
}

.btc-label {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-left: 5px;
}

#unit-toggle {
    background: transparent;
    border: 1px solid var(--btc-orange);
    color: var(--btc-orange);
    padding: 5px 15px;
    border-radius: 20px;
    cursor: pointer;
    margin-top: 10px;
    font-size: 0.8rem;
    transition: all 0.3s;
}

#unit-toggle:hover {
    background: var(--btc-orange);
    color: white;
}

.current-price {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-sub);
}

.chart-container {
    position: relative;
    width: 100%;
    height: 300px;
    background-color: rgba(255, 255, 255, 0.02);
    border-radius: 15px;
    padding: 15px;
}

.chart-title {
    font-size: 0.9rem;
    color: var(--text-sub);
    margin-bottom: 15px;
    text-align: left;
}

.loading {
    color: var(--text-sub);
    font-size: 0.9rem;
}